Combined drill and valve grinder



V. MATALAVAGE. COMBINED DRILL AND VALVE GRINDER.

APPLICATION FILED JUNE 23. 1920.

Patented Sept. 19, 1922.

Maasei- VICTOR MATALAVAGE, OF COLUMBUS, OI-IIO.l

COMBINED DRLL AND VALVE GRIDER.

Application led June 23,

T o all whom t may concern:

Be it known that Vieron MATALavAGn, a citizen ot the United States, residing at Columbus, in the county of Franklin and State of Ohio, has invented certain new and useful Improvements in a Combined Drill and Valve Grinder, of which the following is a specification. i

This invention relates to improvements in an improved combination tool designed Jfor garage and small machine shop work wherein is co-operativelyprovided a two multiple speed drill having seli:l feeding features cmployed in conjunction therewith, and means whereby the drill may be quickly and read-l ily "converted into a tool capable'or boing employed for the purpose of grinding the valves or an internal combustion engine.

.Certain of thelobjects ot the invention are to provide a drill wherein is embodied. a hollow frame capable of receiving a rotatable spindle, said frame being provided with a plurality ot gears which are arranged concentrically with respect to said spindle, and which gears are rotated by a main or master gear and are so arranged as to be coupled for rotation with said spindle by means of a plurality7 of selectively operable key elements, which are slidably carried inconjunction with said spindle and are arranged to be inserted as desired in key ways provided in thev gears, whereby upon the selective operation or said keys varying speeds of rotation will be imparted to said spindle from the master gear, and similarly, said keys may be actuated so that the master gear will impart an oscillatory back` and forth motion to thespindle, ,in order to adapt the latter tovalve grinding movements; in cooperative means for lowering said spindle within said trame during the carrying out of drill operations, said latter means consisting or a pivotally mounted le-v ver. Awhich has its `lower end linked vto an eccentric pin carried rby Vthe master gear, so that upon the rotation or said gear said level` will be oscillated, the upper end oi said lever lbeing provided with a pivoted detent which engages with a ratchet member threadedly connected with said spindle, whereby upon the oscillation of the 'lever said ratchet meinberfmay be rotated for carrying` varying distances so that the downfeed of the spindle may be automatically effected during the operation of the master gear; in the provision of an improved ad- 1920. serial No.` 391,216.

justa-ble frame for effecting the supporter the'spin'dle as a whole and finally inthe provision of a detachable balance wheel, which is adapted-tol be yconnected 'for rotationy with the master gear when the toolis employed as a drill, and disconnected from said 4tool when the latter lis in use'y for valve grinding l purposes. y t

lViththese and otheriobjects in view, as will appear as the description proceeds, the l invention accordingly consists in the novel 'features of construction, combinationslof elements'and arrangements of parts, hereinafter to be fully described and pointed out inthe appended claims. y y

In the accompanying drawing, forming a part offthis specification and in which siinilar characters of reference denote like and corresponding parts: n

Figure l isa sideelevation `of the imf proved combination tool comprising thel present invention, y l t l Figure 2 is an enlargedelevation ofthe tool, parts being broken awayand shownA in section ior the purnose ofdisclosing underlying structure, 'aridz Figure 3 is a transverse "horizontal sectional view vtaken along the planes disclosed by the lines 3,-3 of Figuresl and 2.`

Referring more particularly to the drawing, the numeral l designates thev improved y combination tool comprising the present in"l f ventlon in its entirety. '11n its preferredV forni-this tool-consists not a 4main frame?, whichincludes a vertically yextending por` -tion 3, a laterally turneduppelf end 4, and a4 bifurcated laterally bent lower end 5. The slot produced in the lower end isadapted to receive aledge 7 of any suitableperinanent character -upontwhirh the tool as 'a whole may be detachably mounted. s The connection between'the 'end 5 andthe ledge 7 may be etfectedthrough the provision or a vertical wing ,screw 8, which' carries a flaty 100 Aupper end 9 arranged to press against 'the under side of the ledge 7,whereby uponlthe tightening of thescrew the trame 2 is capable of being lirmlyhelfd and supported in combination with the fledge, as it 4 will be 'clear-ly understood. Also,y the vertical `por- -tionl of the frame isadapted toreceive an adjustable table 10,`which is vertically movable to and VAfromthe` chuckll of the tool. The positions ofthe table iOfmay Ybe more or less permanently maintained through the medium of thejthurnb screw 12, which lat rio ies

ter is adapted to frictionally engage with the vertical portion of said frame 10.

Mounted upon the upper portion 4 of the main frame 2 is a supplemental or secondary frame 13, this frame having its lower por tion provided with a sleeve 14, which is adapted to be inserted in a vertical opening 15 provided in the end 4, and a thumb screw 16 is provided which is threaded into the side of the end 4 so as to impinge upon the sleeve 14, and to thereby securely connect the secondary frame with the main frame, rEhe secondary frame, in turn, is provided with a removable side plate 17, which is secured to the upper and lower ends 18 of the secondary frame by the use of screws or the like. This plate 17is provided with inwardly projecting arms 19, 2O and 21, which are provided with vertically registering bores 22 for the reception of the vertically extending spindle 23 of' the tool. The lower end of the spindle passes through the sleeve 14 and is suitably connected with the revolvn ing chuck or tool holder 11. rilhe upper end of the spindle is provided with a threaded cap 24, in which is received the lower spheri-y cal end 25 of a feed screw 26, the latter being, in turn, threaded into an adjusting nut 27, which is positioned between the upper end of the secondary frame and an integral linger 28 formed therewith. By this construction the nut 27 will be maintained against vertical movement, and yet will be permitted to rotate so as to effect the raising and lowering of the screw 26 and consen quently the spindle 23. 1f desired, the upper end of the screw may be provided with a key way 29 in which a key 30, carried by the upper end of the secondary frame, may be positioned so that the screw will be prevented from rotating, that is, the operation of the nut 27 will effect vertical movement on the part ofthe screw without rotating the latter, and hence through the provision of the cap 24 and the spherical end 25 of the screw a good bearing is provided to permit of the more or less rapid rotation of the spindle.

1n order to effect the rotation of the spindle the side of the secondary frame is provided with a bearing in which is received the operating shaft 31. As shown in Figure 1, this shaft is provided with a squared end, which is adapted to receive any suitable form of manipulating device, not shown, such for example as a hand crank or a power wheel. rlhe inner end of the shaft 31 is connected in any suitable manner with a master or compound gear 32, which is of peculiar configuration and consists of an outer series of gear teeth 33, an inner gear 34, and intermediate series of segmental gear teeth 35 and 36. These teeth, as will be obvious, may be formed integrally or separately with respect to the gear 32 as a whole, in order that they will rotate in unison. Also, the outer edge of the gear 32 is provided with gear teeth 37, the function of which will be hereinafter more fully described.

The teeth 33 are employed to drive the spindle 23 at its highest or first speed, and to this end the said gear teeth 33 mesh with a bevel pinion 38, which loosely surrounds the spindle 23 and is confined for rotation between the lower arm 21 and the lower portion of the secondary frame. To connect the pinion 38 for rotation with the spindle, the latter is provided with a vertically extending groove 39, in which is fit a sliding bar 40 having a key extension 41 integrally formed upon its lower end. This bar is centrally provided with a recessed extension 42, in which is positioned a ring 43, the latter being disposed within the hub of the arm 20. The arm 20, in turn, is provided with a slot 44 having offset portions 45, and this slot and its offset portions are adapted to receive an actuating pin 46 connected with the ring 43. Normally, the pin 4G rests within the offset portion 45 formed midway in the slot 44, but it will be observed by turning the pin laterally the same may be moved out of the intermediate offset portion 45 and elevated so that the pin may be positioned within the offset portion formed in the upper end of the slot. This movement on the part of the pin results in raising the ring 43 so that corresponding elevation of the bar 4G is effected, and this movement of the bar per` mits the key extension 41 thereof to enter into one or the other of the key way slots 47 provided in the pinion 38. Therefore, the rotation of the master gear will result in the rotation of the pinion 38, and when the key extension 41 is within the slot 47,I the rotation of the pinion will result in turning the spindle 23 at its highest rate of speed. To rotate the spindle at a lower rate of speed, the pin of the ring 43 is moved so that it occupies its lower most position within the slot 44, thereby causing the extension 42 to engage within one of the key ways formed in the pinion 48, which pinion being in mesh with the gear 34 willrotate the spindle 23 at its slowest rate of speed. It will be observed that the pinion 48 is loosely mounted for rotation around said spindle and between the arms 20 and 21 of the supplemental frame. rEhe key extensions 41 and 42 are so arranged that tliesame may be both out of engagement with their respective pinions at the same time and to be also capable of occupying but one pinion during a given operation. rThrough this construction a multiple speed drill is provided which may be simply, positively and easily controlled.

When it is desired to employ the tool as a valve grinder, the pin 46 is moved so that l 49, in which is positioned a vertically adv-v the spindle.

tion of the slot 44, thus disconnecting the pinions 3S and 48 from connection with Then, the opposite side of the spindle is provided lwith an elongatedslot justable bar 50. This' bar carries keyextensions 51 and'52, the former of which b`eing movable into and out vof any one of a plurality of key ways provided in a bevel pinion 53, which is `located between the arms 19 and 20 of the supplemental frame and loosely surrounds the spindle 23. rlChe lower extension 52 is similarly movable into any one of a plurality of v'keyways provided in Va bevel pinion 54, which is situated iinmediately above the pinion 38. rlfhe pinion 53 is so 4disposed as to engage with the gear Vteeth 35, while the pinion is situated to similarly engage the gear teeth To couple these pinions 53 and 54 with the spindle, the bar is notched to receive a ring 55, from which a pin 5G projects, the latter being received within va' slot 57 provided in the arm 20.` The upper end of this slot 57 is provided with aii offset extension 58 which normally receives the pin 56, and thereby maintains the bar 50 elevated so that its key extensions 51 and 52 will be out of engagement with their respective pinioiis 53 andv 54. However, by rotating the ring the pin 56 maybe permitted to move vertically in the slot 57 so that the bar 50 as a whole will be lowered, thus causing' the extensions 51 and 52 to enter the key ways in the pinions 53 and 54, thusfdirectly connecting vthe latter simultaneously for rotation with the spindle. `The arrangement ofthe teeth 35and 36 is suoli that the gear 3G will ro- 'tate the pinion 54 in a given direction upon ythe rotation of the master gear, and consequently the spindle 23, and when said teeth 36 are disengaged from the Oear 54, the teeth 35 will tlienmesh'with the pinion 53, thereby causing the latter to rotater in the opposite direction as compared. with 4the direction of rotation of the p;nion 54. This arrangement imparts vto the spindle 23 an oscillatoryback and forth motion, which is highly essential in valve grinding "operations. Sincevtheteeth 36 are greater iii Vnumber than the teeth-35, it will bemaiiifest then that successive operations of said pinions 53 and 54 will impart progressive rotation to the spindle 23 in a given direction, a feature which prevents the valve grinding'tool fromfstartiiigand stopping when Aoperated by the spindle 23 at given or lined positions. l

lVhen the tool is employed as a drill, a balance wheel 59 is provided for'i'ender-- ing the voperation kof the drill as a whole smooth and uniform, and when said tool is employed as a valve grinder the balance wheelfis detached from the tool so as to y alternate spindle.

prevent the saine from interfering with' the` revolving `moveine'nts framel receives a removable shaft 60,which carries a spur gear 61 so disposed as to norinally mesh with the teeth 37, whereby ywhen the master gear is revolved motion will be impartedto the shaft 60, the latter in" turn 59. To mount the shalt in position, use

'is made of-a bracketk 62, which is designed for connectionl with the plate 17. This bracket is provided with a pair of doweh pins 63, which are received Within openings provided in the plate 17 'and also, said.

bracket is provided with a"central opening arranged to register with a corresponding opening provided in said plate.` A headed bolt G4 is passed tliroiighthese.openings and has its inner threaded end arranged to receive a wing nut (35, wlierebyupon the tightening of the latter the said bracket will be drawn intor 'tightly clamped engagement with theV plate 17 soas to provide a secure yet detachable `journal for the shaft 60. rlhe end of the'shaftaway fromA the bracket 62 is adapted to be removably inserted within aiiiop'eniiig provided in the 'supplemental frame, the latter opening serving 'as a li'oiirnal for the inner end of said` shaft, and hence does not interfere .with the application or'removal' of the balance wheel structure in connection with the supplemen-- `t-alframe asa whole.

of the 'llo this end, the supplemental carrying at itsouter end the balaiicewheel y provided centrally with an elongatedslot 70,

in' which isl positioned avbolt 71, the latter having4 its? headed =en`d mounted within a 'similarslot 72 provided in an extension 73 integrally formed 'with the supplemental frame.v Serrated collars 74 are positioned' between the inner face of the extension 7K3 and the lever '69 so as to hold th'elatter in its'proper position of actuation. Also, the threaded endy of the'bolt 71 is-adapted to'I receive wing nut 75which is employed 4to maintain the various vfiilcruinpositions of said leverfwith respect to the bolt 71'. By

verticallyadjusting saidl bolt-itis manifestA that the upper end thereof may yoscillate .varying distances, a feature which affords considerable adjustment in the downward' feed of the spindle 23. The inner face of the'extensi'on 73 is notched as tit-176 `.to receive the correspondingly notched facevof the outer collar 74, and similarly, theinner collar 74 isy also provided with anotched face 77 which engages with the` 'side of the lever 69, the meeting faces of said collars being perfectly plain so that the lever may oscillate Without undue friction or loss oii adjustment.

rlhe upper end ot 'the lever G9 Ais provided with a pivo'ted detent or pawl V78, which is adapted to engage with a plurality olQ ratchetteetb 79 provided upon the adjusting nut 27. This pawl may be spring pressed into engagement with the teeth 79 or may be permitted to iall into the latter by virtue o'fgravity, as desired. lt ivill therefore be manifest that When the tool is employed as a d ill the rotation of the master Will result in the oscillation of the lever 69 and by virtue olf the paivl con* struction 78 connected with the upper end thereof, motion will be imparted to the nut 27 so as .to effect a graduated lowering of the spindle 23 duri; t, g the operation oit the device. rlnhe speed or descent of the spindle may be governed by adjusting the position oli the bolt 7l which controls the extent et oscillation or the throw of the upper end of said lever and its pawl 78, The key Ways provided in the drill spindle for the reception oi the bars l() and 50 are of sinfcient length to permit said drill to assume its lou'ermost position without interfering with the operation ci? the bars or affecting their adjustments in coupling or uncoupling their respective pinions to the spindle 23.

l't will oi course be understood that the chuck may be removed from engagement with the spindle when the tool is not employed Yfor drilling purposes and that an ordinary valve engaging tool7 not shown, may be connected "with said spindle for the purpose of effecting the grinding. oit valve seats. ilso, it vvill be observed that the secondary frame is removable from engagement with the main frame, and hence when valve grinding operations are to be carried out the secondary frame is removed from its position Within the main frame, in order that the tool will possess theadvantage oit portability and to enable the same to be readily handled in valve grinding manipulations.

ln view or the foregoing description taken kin conpmction with the accompanying drawing, it will be apparent that a combination tool is provided of very considerable utility and one Which may be quickly changed to adapt the same to the peculiar class oiY Work at hand. The parts are slidable and positive in operation and by virtue of ltheir substantial construction are not likely to become out ot order or to occasion considerable repair. the supplementalv frame. may be provided with a hand knob 80, and the lower end of the sleeve 14 is provided with a hooked ring 8l, Which may be employed ttor the purpose of enabling Work to be chained in connecrlhe upper portion of tion with the frame, in lieu of the table 10. The tool therefore comprises a combination drill and valve grinder, together with auxiliary features to effect the positive operation of each part of thertool, convenience in operationv being also taken into consideration. ln view of the foregoing it is believed that the operation, construction and principles oiE the invention Will be readily understood by those versed in the 7 art, and therefore a more extended explanation has been accordingly omitted.

llilhat is claimed is: v

l. ln a combination tool of the character described, a trame, a compound gear rotatably carried by said frame, a tool operating spindle rotatably journaled Within said iframe, means co-operative With said spindle and said gear adjustable'to cause selective rotation of said spindle in a predetermined direction and to eilect an oscillatory back and i'orth motion thereof.

2, ln compound toolI of the character described, aiirame, a compound gear rotatably journaled in connection with said 90 iframe, said gear being provided with spaced sets of annularly and concentrically disposed gear teeth, a tool spindle, pinions in mesh With the sets of gear. teeth provided upon said compound gear and normally disposed to loosely surround said spindle, a sliding key structure capable of selectively connecting said pinions with said spindle whereby upon the rotation of said gear said spindle may be continuously rotatedin a given direction at speeds determined by the pinion coupled to the spindle, and a plu-v` rality of segmental sets oit gear teeth carried by said compound gear, pinions loosely car by said spindle and capable of mesh-V ing with said segmental sets of gear teeth, and clutch mechanism for connecting said latter pinions with said spindle.

3. ln a tool oit the character described, a frame, a tool operating soindle rotatably journaled Within said frame, means for rotating said spindle, comprising a main compound gear rotatably `iournaled in connection With the frame, concentrically disposed annular sets of gear teeth carried by said. gear, pinions normally Adisposed to loosely surround said spindle and to mesh With said gear teeth, a key slidably mounted'in a groove provided in said spindle, said key being provided with spaced key extensions, and an adjusting memberconnected with said key and operating in a slot provided in said :trame tor selectively moving said key extensions into engagement vwith, said pinions,v whereby the latter may be selectively coupled for rotation in connection with said spindle to permit the compound gear to rotate the spindle at multiple speeds.

a. ln a tool of the character described, a frame, a spindle rotatably mounted in connection with said frame, a compound gear for effecting the rotation of saidl spindle, said gear beingk formed to include spaced sets of concentric annular gear teeth, pinions normally in mesh with said gear teeth and disposed to loosely surround said spindle, a `slidably mounted key member positioned in a groove provided in-said spindle, extensions formed with said member and ring surrounding said spindle and positioned within the recesses provided in said member, and an actuating device projecting from said ring and disposed in the slot provided in said frame,'whereby through the agency of said device said key member may have its positions controlled so that the extensions thereof may be selectively projected into engagement 'with key ways provided in said pinions, thereby permitting said gear to rotate said spindle at varying or multiple speeds. a

5. In a drill, a frame, a tool spindle rotatably journaled within said frame, means for transmitting the motion of said gear to said spindle7 a vfeed screw formed with the upper end of said spindle, a nut mounted within said frame and in threaded engagement with said screw, ratchet teeth formed upon said nut and lever connected with said frame and having an intermediately Vlocated adjustable fulcrum, means operated from said gear to oscillate said lever, and a pawl pivotally connected with the upper end of said lever and in engagement with the teeth of said nut to effect the turning of said nut and the longitudinal movement of said screw and spindle during the rotation of said gear. 6. In a tool of the character described, a frame, a tool spindle rotatably mounted within said frame, a driving gear, means for transmitting the motion of said gear to said spindle, a feed screw having a swivel connection with the upper end of said spin-y dle, and a nut rotatably journaled within said frame and threaded into engagement with said screw, means for preventing the rotation of said screw during the rotation of said nut and yet servingto permit the screw to move vertically, and means operated by the rotation of said gear to automatically rotate said nut varying distances.'

't'. In a tool of the character described, a frame, a spindle rotatably mounted within said frame, a gear for rotating said spindle, a feed screw carried by the upper end of said spindle, means '-'for operating j said screw comprising an oscillatory lever, said lever having an elongated slot formed therein intermediately of its ends, an adjustable fulcrum device positioned within said slot and within a co-operative slot provided in said i frame and said device serving to regulate the' throw of the effectiveend of said lever, a nut threaded in engagement with saidv screw, said nut having one of its faces provided with ratchet teeth, a pawl carried by the effective end of said lever and disposed to engage with said teeth, the engagement of said pawl with said teeth being regulated by said adjustable fulcrum device, and a link connected with the other end of 4said lever and eccentrically with the axis of said gear, whereby upon the rotation of the latter said lever will be oscillated.

8. In a compound tool of the character described, a frame, a spindle rotatably connected with said-frame, a compound gear rotatably supported upon said ring, means co-operative with said gear to effect continuous rotation of said spindle in onedih rection or an oscillatory back and forth motion thereof, a balance wheel, a shaft for said balance wheel'driven from said gear, and means for readily permitting of the removal of said balance wheel and shaft from said frame when oscillatory motion is to be Aimparted to said spindle. j

9. In a combination tool of the character described, a main frame, a supplemental frame a spindlejournaled in said supplemental frame, a master gear carried by said supplemental frame, the said supplemental frame and spindle being removable from the main frame as an operative unit, and means co-operative with said gear to impart acon*l tinuous rotary motion to said spindle or an oscillatory back and forth motion thereto.

l0. In a valve grinder, a frame, a tool spindle rotatably mountedwithin said frame,

an actuating gear rotatably journaled in connection with said frame, said gear being f provided with segmental` sets of lgear teeth, pinions journaled in said frame and nor-` mally disposed to loosely surround said spin-` dle, said pinions being arrangednto engage with said gear teeth and located .on opposite sides of the axis of said actuating gear,

means for connecting said pinions with said spindle, comprising a slidably mounted key member` disposed within a groove provided in said spindle, key extensions formed upon said member, a ring surrounding said spindle and disposed within arecess provided in said member, and an actuating device extending from said ring anddisposed within a slot formed in said frame, said device serv-v ing to permit of verticaladjustment on the' -part of said key member to simultaneously project the extensions thereof into or out of key ways provided in said pinions.

. In testimony whereof I affix my signature. l

VICTOR MATALAVAGE. 

